Since the latest update, Grammarly's Firefox add-in keeps saying that it is not registered. Not earth-shattering but inconvenient.

Working fine until latest Firefox upgrade. Not actively monitored by Mozilla may be the cause.

I would give this more if they had an affordable tier for premium. As a developer I understand the yearly subscription model, but, with everyone using it 144$ is too steep a price. Half that I would maybe pay, but this is way too much.

The add-on keeps requesting for me to sign-in, I do but the app doesn't show that I am. I can't use my premium features when writing.

Hat mir von den Funktionen her gefallen, aber beim Herunterladen noch rechtzeitig bemerkt, wie unverschämt der Umfang der Zugriffe ist: "Die Erweiterung kann sowohl den Inhalt jeder von Ihnen besuchten Webseite lesen als auch die Daten, die Sie dort eingeben, z. B. Benutzernamen und Passwörter."
Sowas kommt mir nicht auf den Computer.

I want to love this, but it's extremely unreliable and buggy. On some sites it won't work at all, on others it's a mess. It keeps inserting words at the cursor or the end of the text instead of where it should go, and inserts duplicate words while I'm typing. Sometimes it works, but more often than not it only makes a huge mess I have to clean up manually. I'm really disappointed.

Grammarly functions fine but being closed source, I have decided to abandon it since I'm pretty sure it maintains its "free" service by analyzing and selling whatever users are typing. If you're going to use this service, and open an account (which is optional), do yourself a favor and sign up using a Free email masking service such as SimpleLogin and using an open source password manager like Bitwarden.

If any Grammarly developers are reading this, please improve your transparency and make your products open source so that the ever growing privacy conscious community can embrace your service. Thank you!

I've heard many others say this too, I cannot sign in.

It works well when it does work.
Most of the times ig hogs a lot of memory and a lot of CPU. While it does that it causes text boxes to become unresponsive and sometimes causes the web browser/tab to crash.

This worked well for a long time and even worked with Google Drive in the beta. Then on the day they announced that it now is working with Google Drive it stopped working all together. Been several weeks and nothing! Going to move to Linguix.

I love it but keeps on logging me out and it is not easy to back in on FireFox.

Like the app, Needs Improvement before I buy premium. Always logging in, spellchecker.net never works anymore. Works when it wants to on most pages. To buggy for now.
11-28-20

only works sometimes

Після увімкнення цього додатка стали набагато частіше падати вкладки.

Es una aplicación excelente, pero consume demasiados recursos, ralentiza el navegador, y a veces lo cuelga y lo cierra. He tenido que deshabilitarlo para que Firefox vuelva a la normalidad. Una pena

You're required to sign up with personal information for it to work, which is absolutely idiotic considering it's just for fixing grammar and spelling.

Can't figure if I'm logged in or not? Lousy program.